DE102006009209A1 - Oil engine for use in internal combustion engine of vehicle, has connection units cooperating with inlet-channels to establish connection between chamber and part of interior of engine, where each unit has radial seal that seals unit - Google Patents

Abstract

The engine has an oil chamber boundary unit (118) provided adjacent to an oil chamber, where the boundary unit has a number of oil-chamber inlet-channels (126) to the chamber. A set of connection units cooperate with the respective inlet-channels to establish a connection between the chamber and a part of an interior of the engine or to close the channel. Each connection unit is provided with a radial seal (170) that seals the respective connection unit.

Description

The The present invention relates to an oiling unit for placing on an internal combustion engine with an oil chamber.

Known oil functional units for arranging on an internal combustion engine are designed as valve covers Aluminum or a plastic material (thermoset or thermoset) formed, in which an oil separator for the separation of oil particles a blow-by gas of the internal combustion engine, a pressure regulating valve, an oil filler neck and a vacuum reservoir are integrated.

These Valve covers are attached to a cylinder head or to a so-called Lead frame of the internal combustion engine by means of fastening screws solvable arranged, with a longitudinal a ring-shaped circumferential lower edge of the valve cover extending seal with a T-profile or an I-profile between the valve cover and the cylinder head or the lead frame is arranged to the Sealing gap between the valve cover and the cylinder head or the Seal ladder frame.

at This design extends an oil chamber (crankcase) of the engine into the valve cover, so that around the valve cover circumferential seal the oil chamber seals to the outside, to prevent oil mist in the outside space the internal combustion engine passes.

Of the The present invention is based on the object, an oil functional unit to create, which in a novel way with the oil chamber of the internal combustion engine connected and opposite the outside space of the internal combustion engine is sealed.

These The object is achieved by an oil functional unit for arranging on an internal combustion engine with an oil chamber and one to the oil room adjacent Ölraumbegrenzungsbauteil which has a plurality of oil space access passages to the oil space, solved, wherein the oil functional unit more Includes connecting elements, each connecting element with each one of the oil room access channels interacts, to a connection between the oil room and at least a part of an interior of the oil functional unit to produce or the relevant oil room access channel to close, and wherein each connection element with a respective connection element is provided sealing gasket.

at the oil functional unit according to the invention So is the access of the oil functional unit to the oil room of the internal combustion engine is not made by the fact that the oil functional unit over a large contiguous access opening to the oil room the internal combustion engine opens; rather, the oil room the internal combustion engine already by the adjacent to the oil chamber Ölraumbegrenzungsbauteil closed, which thus already provides a basic oil mist seal the oil chamber.

Of the Access of the oil functional unit to the oil room the internal combustion engine takes place in the solution according to the invention over several Connection elements, each with a provided in the Ölraumbegrenzungsbauteil Ölraum access channel interact to create a connection between the oil space and at least one part an interior of the oil functional unit manufacture.

Not required oil space access channels in the oil space boundary component can by additional Connection elements, which in particular designed as blind plugs could be, to be introverted.

Further For example, each connection element that communicates with one of the oil space access passages in the oil space restriction member cooperates, associated with a respective connection element Seal individually against the exterior sealed.

In order to deleted the need to put one around a bottom of the oil feature unit provide circumferential main seal.

There the sealing force in the inventive solution no longer on the entire outer contour of the oil functional unit must be applied, significantly less attachment points (Fixing screws or decoupling elements) required as in the known valve covers.

Thereby will be better installability and better accessibility the centrally arranged in the cylinder head injectors for injecting reached by fuel in the cylinders of the internal combustion engine.

Further can the oil functional unit according to the invention be made more compact than the known valve covers, so that results in a better rigidity of the oil functional unit.

The to the oil room adjacent oil space limiting component can be formed in one or more parts.

The oil space limiting component can by the cylinder head of the internal combustion engine and / or by a mounted on the cylinder head additional component, which corresponds to the previously used lead frame, be formed.

In principle, could be provided be that the connecting elements as recesses on the oil functional unit are formed, in which arranged on the Ölraumbegrenzungsbauteil The connecting pieces, which open the oil chamber access channels, intervene.

at However, a preferred embodiment of the invention is provided in that at least one of the connecting elements is designed as a connecting piece is, which in the assembled state of the oil function unit in an oil-space access channel of the oil chamber boundary member intervenes. In such an embodiment of the invention, the Ölraumbegrenzungsbauteil be particularly simple.

Basically it would be possible to Connection elements of the oil functional unit sealed by means of gaskets provided with an axial, i. parallel to the axes of the oil chamber access channels, acting Sealing force are applied.

Especially Cheap However, it is when at least one of the connecting elements with a Radial seal is provided. Such a radial seal is with a radially acting to the axes of the oil space access channels Sealing force applied, which extends over the circumference of the radial seal acting sealing forces compensate each other.

Such Radial seals can be particularly compact, since they are only around each must locally extend to be sealed connection element.

The Radial seal can on its radially outer side with at least a sealing lip to increase the sealing surface pressure be provided.

alternative or in addition For this purpose, it can also be provided that the radial seal on her radially inner side provided with at least one sealing lip is.

Around a tolerance compensation between the respective position of the connection element on the one hand and the associated oil chamber access channel on the other to enable it is advantageous if the radial seal one in mounted Condition of the oil unit on a connecting element adjacent the first sealing and one on the oil space limiting component adjacent second sealing region and one between the first Abdichtbereich and the second sealing arranged, for Tolerance compensation deformable compensation range includes.

Further can be provided that the seal at least one sealing element made of an elastomeric material.

Around a sufficient dimensional stability to ensure the seal can be provided that the seal at least one stiffening element includes.

One Such stiffening element may in particular of a metallic Material be formed.

at The solution according to the invention can be different trained oil functional units, which different numbers of oil space access channels to the oil room of the Use internal combustion engine, with one and the same Ölraumbegrenzungsbauteil together be used.

Around also that of a specific oil functional unit Unused oil space access channels reliable against the outside space of the internal combustion engine, it is advantageous if at least one of the connecting elements of the oil functional unit is designed as a blind plug, which in the mounted state the oil functional unit one of the oil space access channels of the oil space limiting component closes.

The oil functional unit may be configured to include a contiguous oil function module which all Functions of the oil functional unit, so for example the oil separator, the pressure control valve, the oil filler neck and / or the vacuum reservoir includes.

One such coherent oil function module is particularly easy to handle and quickly on the oil space limiting component mountable.

alternative For this purpose, it can also be provided that the oil functional unit at least two separately on the oil space limiting component mountable oil function modules includes. Such a structure of the oil functional unit is more flexible, depending on the desired functionality of the oil functional unit or depending on the installation position (longitudinal installation or transverse displacement) of the internal combustion engine optionally only one the oil function modules against a different oil function module must be replaced, but not the entire oil functional unit.

Since when divided into several separate oil function modules each of the oil function modules ei Having a more compact design, each of these separate oil function modules can have a higher rigidity than a large, coherent oil function module.

Further can be done by splitting the oil functional unit in several separate oil function modules, in particular in the production of oil function modules as injection molded parts made of plastic, the respective wall thickness of the oil function modules separately optimally the respective requirements are adapted.

So can be provided that at least two of the oil function modules different Wall thickness exhibit.

Especially can be provided that that of the oil function modules that a has higher wall thickness, includes a vacuum storage chamber.

If one of the oil function modules an oil filler neck has, so is this oil function module preferably against another oil function module interchangeable, in which case in the assembled state of the oil functional unit the oil filler neck disposed at a different position relative to the oil space limiting member is. In this way, the oil functional unit, only by replacing the oil filler neck having oil function module and without change or replacement of the remaining oil function modules, in a simple manner to different mounting positions of the internal combustion engine, in particular to a longitudinal structure or a cross-section of the internal combustion engine to be adjusted.

There thus the other oil function modules can be used more versatile, results from the division of the oil function unit to several separate oil function modules both a development and a cost advantage, in particular for a the oil separator and the pressure control valve containing oil function module.

at A preferred embodiment of the invention comprises the oil functional unit at least one oil separator.

At least one of the oil separators may include, for example, baffles.

alternative or in addition For this purpose, at least one of the oil separator at least one cyclone include, whereby a particularly efficient separation of oil particles is achieved from a blow-by gas of the internal combustion engine.

Further can be provided that the oil functional unit comprises at least one pressure control valve.

The oil functional unit can over it In addition, at least one oil filler neck include.

In addition, can the oil functional unit comprise at least one vacuum accumulator chamber.

Basically, the oil function module or the oil function modules the oil functional unit each be formed in one piece.

at However, a preferred embodiment of the invention is provided that the oil functional unit at least one oil function module comprising at least one upper shell and one lower shell includes.

These Upper shell and lower shell can, for example in an injection molding process, in a simple manner separately prepared and then, for example by welding or Bonding, to be fixed together.

at A preferred embodiment of the invention provides that formed on the lower shell of at least one of the connecting elements is.

includes the oil function module an oil separator, so it is also advantageous if the lower shell at least a cyclone is formed.

At the upper shell, however, can be formed at least one pressure control valve housing be.

Further can be provided that the oil functional unit comprises at least one oil function module, that with at least one recess for receiving an injector and / or a supply line to an injector is provided.

Around the assembly of the oil functional unit on the oil space limiting component can be provided that the oil functional unit at least an oil function module comprising, with a mounting flange for attachment to the Ölraumbegrenzungsbauteil is provided.

One such mounting flange can in particular with fastener passage openings for the passage of fasteners through the mounting flange, for example in threaded holes on the oil space limiting component, be provided.

Further Features and advantages of the invention are the subject of the following Description and the drawing of an embodiment.

In show the drawings:

1 a schematic perspective view of an oil functional unit comprising two separate oil function modules, which is mounted on a Ölraumbegrenzungsbauteil an internal combustion engine, and a plurality of mounted on the Ölraumbegrenzungsbauteil injectors;

2 a schematic plan view from above of the oil functional unit and the oil chamber limiting component 1 ;

3 a schematic front view of the oil functional unit and the Ölraumbegrenzungsbauteils from the 1 and 2 , looking in the direction of the arrow 3 in 2 ;

4 a schematic view of the oil functional unit and the Ölraumbegrenzungsbauteils from the 1 to 3 from behind, looking in the direction of the arrow 4 in 2 ;

5 a schematic side view of the oil function unit and the Ölraumbegrenzungsbauteils from the 1 to 4 , looking in the direction of the arrow 5 in 2 ;

6 a schematic side view of the oil function unit and the Ölraumbegrenzungsbauteils from the 1 to 5 , looking in the direction of the arrow 6 in 2 ;

7 a schematic plan view from below of the oil function unit and the oil space limiting component of the 1 to 6 ;

8th a schematic plan view from above of the oil function unit and the oil space limiting component of the 1 to 7 , showing hidden lines;

9 a schematic cross section through the oil function unit and the oil chamber limiting component of the 1 to 8th , along the line 9-9 in 8th ;

10 a schematic longitudinal section through a first oil function module of the oil function unit and through the Ölraumbegrenzungsbauteil from the 1 to 9 , along the line 10-10 in 8th ;

11 a schematic cross section through the oil function unit and the oil chamber limiting component of the 1 to 10 , along the line 11-11 in 8th ;

12 a schematic plan view from above of the oil function unit and the oil space limiting component of the 1 to 11 , showing hidden lines;

13 a schematic section through the first oil function module of the oil functional unit and through the Ölraumbegrenzungsbauteil from the 1 to 12 , along the line 13-13 in 12 ;

14 a schematic vertical section through an oil chamber access passage of the Ölraumbegrenzungsbauteils, engaging in the access port connecting piece of the oil functional unit and a sealing gap between the connecting piece and the boundary wall of the access channel sealing radial seal;

15 a schematic perspective view of the radial seal 14 ;

16 a schematic side view of the radial seal of the 14 and 15 ;

17 a schematic axial section through the radial seal of the 14 to 16 ;

18 a schematic perspective view of the first oil function module and a second oil function module of the oil functional unit of the 1 to 13 facing the top of the oil functional unit;

19 a schematic perspective view of the two oil function modules of the oil function unit 18 , facing the bottom of the oil functional unit;

20 a schematic perspective view of the first oil function module of the oil functional unit of the 18 and 19 ;

21 a schematic perspective view of an upper shell of the first oil function module 20 , facing the top of the top shell;

22 a schematic perspective view of the upper shell of the first oil function module 21 , facing the bottom of the top shell;

23 a schematic perspective view of the upper shell of the first oil function module of the 21 and 22 wherein a lid of a pressure regulating valve of the oil operating unit has been removed;

24 a schematic perspective view of a lower shell of the first oil function module, which comprises two cyclones, in whose end openings each inserted a dip tube element is set, facing the top of the lower shell;

25 one of the 24 corresponding schematic perspective view, wherein the dip tube elements have been removed;

26 a schematic perspective view of the lower shell of the first oil function module, wherein the connecting pieces of the oil function module are each provided with a radial seal, facing the bottom of the lower shell;

27 one of the 26 corresponding schematic perspective view, wherein the radial seals of the connecting pieces have been removed;

28 a schematic perspective view of the second oil function module of the oil function unit, looking at the top of the oil function module;

29 a schematic perspective view of an upper shell of the second oil function module 28 , facing the top of the top shell;

30 a schematic perspective view of the upper shell of the second oil function module, with a view of the underside of the upper shell;

31 a schematic perspective view of a lower shell of the second oil function module, looking at the top of the lower shell;

32 a schematic perspective view of the lower shell of the second oil function module, wherein the connecting pieces of the second oil function module are each provided with a radial seal, facing the bottom of the lower shell; and

33 one of the 32 corresponding schematic perspective view, wherein the radial seals have been removed from the connecting piece.

Same or functionally equivalent Elements are designated in all figures with the same reference numerals.

One in the 1 to 13 presented as a whole, with 100 designated oil functional unit comprises a first oil function module 102 , which two oil separators 104 in the form of cyclones 106 and one between the oil separators 104 arranged pressure control valve 108 includes, and a second oil function module 110 , which an oil filler neck 112 and a vacuum storage chamber 114 that provides negative pressure for example for a brake booster or a pneumatic camshaft adjustment includes.

Both oil function modules 102 . 110 are made separately from each other and separately on a top 116 an oil space limiting component 118 mounted, which is formed as a substantially cuboidal plate of a metallic material and is arranged on a (not shown) cylinder head of an internal combustion engine, such as a diesel engine, that it forms a boundary of an oil chamber of the internal combustion engine.

How best 7 It can be seen, is the oil chamber limiting component 118 with several, approximately centrally arranged, through-holes 120 provided, through each of which an injector 122 that injects fuel injected into each cylinder of the internal combustion engine.

Further, the oil space limiting member 118 with a first row 124a of several, for example five, oil room access channels 126 and with a second row 124b of several, for example five, oil room access channels 126 provided, the first row 124a of oil room access channels 126 the first oil function module 102 and the second row 124b of oil room access channels 126 the second oil function module 110 assigned.

Each of the oil room access channels 126 has a substantially cylindrical cross-section and extends from the top 116 up to the bottom 128 the Ölraumbegrenzungsbauteils 118 to access the oil space from the first oil function module 102 or from the second oil function module 110 to allow out.

The first oil function module 102 is in detail in the 20 to 27 shown.

The first oil function module 102 is a double shell and includes one in the 21 to 23 illustrated upper shell 130 in the form of an interior 132 the upper shell 130 enclosing hood and one in the 24 to 27 illustrated lower shell 134 which is a substantially rectangular support plate 136 and two in one piece to the top 138 the carrier plate 136 molded cyclones 106 includes.

Like from the 21 to 23 is to be seen, is in the upper shell 130 the pressure control valve 108 integrated, which has an interior side inlet 140 and an outside room outlet 142 having.

During operation of the oil functional unit 100 is the outlet 142 of the pressure control valve 108 via a (not shown) suction line to an air intake assembly of the internal combustion engine, to which the oil functional unit 100 is arranged, connected.

The pressure control valve 108 includes a lid 144 which is in 21 represented and in 23 has been removed to the interior of the pressure regulating valve 108 display.

At its lower edge is the upper shell 130 with one around the bottom of the top shell 130 annularly closed circumferential mounting flange 146 provided, which has a plurality of fastener passage openings 148 for the passage of fastening means (not shown), in particular fastening screws.

The upper shell 130 of the first oil function module 102 For example, as an injection molded part made of a plastic material having the required chemical and thermal resistance.

As material for the upper shell 130 For example, a glass fiber reinforced polyamide can be used, in particular PA6 or PA6.6.

The wall thickness of the upper shell 130 is preferably in the range of about 1.5 mm to about 2.5 mm.

Downstairs is the interior 132 the upper shell 130 through the in the 24 to 27 illustrated lower shell 134 limited, which in a gas-tight manner at the lower edge of the upper shell 130 is fixed, in particular with the upper shell 130 is welded.

These welding can be done for example by means of ultrasonic welding or friction welding.

Also the lower shell 134 is integrally formed and manufactured for example as an injection molded part of a plastic material having the required chemical and thermal resistance.

As material for the lower shell 134 For example, a glass fiber reinforced polyamide, in particular PA6 or PA6.6, can be used.

The carrier plate 136 the lower shell 134 has several, along the edge of the carrier plate 136 arranged fastener passage openings 149 on and is at the bottom of the top shell 130 of the first oil function module 102 set so that the fastener passage openings 149 in the carrier plate 136 the lower shell 134 with the fastener passage openings 148 in the upper shell 130 aligned, so that suitable fastening means, in particular fastening screws, from above through the fastener passage openings 148 . 149 through in the same aligned threaded blind holes on the top 116 the Ölraumbegrenzungsbauteils 118 can be screwed to the first oil function module 102 detachable on the oil space limiting component 118 set.

The two in one piece with the carrier plate 136 the lower shell 134 trained cyclones 106a . 106b point in the assembled state of the oil functional unit 100 at a small acute angle of, for example, about 10 ° to the horizontal inclined cyclone axes (longitudinal center axes of the cyclones 106 ) 150a respectively. 150b on.

How best 12 can be seen, the cyclone axes run 150a . 150b in substantially parallel to each other aligned vertical planes, but are offset perpendicular to each other in a horizontal direction by a distance d, which is approximately the outer diameter of a cyclone 106 equivalent.

Furthermore, close the cyclone axes 150a . 150b with the longitudinal direction 152 the carrier plate 136 the lower shell 134 an acute angle of, for example, about 10 °.

By this rotation relative to the longitudinal direction 152 the carrier plate 136 and by the lateral offset d is avoided that from the two, with their outlet openings facing each other cyclones 106a . 106b Exiting air streams directly collide, resulting in unfavorable flow conditions through the interior 132 of the first oil function module 102 would lead.

As best of the sectional view of the 13 It can be seen, points each of the cyclones 106a . 106b each a substantially hollow cylindrical front portion 154 and one along the cyclone axis 150a . 150b adjoining, conically tapering rear section 156 on.

In the front section 154 of the cyclone 106a . 106b each opens tangentially to the inner wall of the cyclone 106a . 106b running cyclone inflow channel 158 , with one at the bottom 160 the lower shell 134 molded-on blow-by gas inlet nozzle 162 connected is.

As best of the sectional view of the 14 can be seen, each of the substantially hollow cylindrical trained Blow-by gas inlet port 162 in a respective associated oil chamber access channel 126 the Ölraumbegrenzungsbauteils 118 into it.

In this case, the sealing gap 164 between the outer peripheral surface 166 of the blow-by gas inlet nozzle 162 on the one hand and the boundary wall 168 of the oil room access channel 126 on the other hand by means of a in the 15 to 17 Radial seal shown in detail 170 sealed.

The radial seal 170 is sleeve-shaped and substantially radially symmetrical to its longitudinal axis 172 ,

The radial seal 170 includes one in the assembled state of the oil functional unit 100 on the outer peripheral surface 166 of the blow-by gas inlet nozzle 162 adjacent first sealing area 174 and one in the assembled state of the oil functional unit 100 on the boundary wall 168 of the oil room access channel 126 adjacent second sealing area 176 , wherein the first sealing area 174 and the second sealing area 176 in the axial direction of the radial seal 170 spaced apart and arranged therebetween, for tolerance compensation deformable compensation area 178 connected to each other.

The compensation area 178 includes a bend in the wall of the radial seal 170 whose deflection depends on the extent of the sealing gap 164 can vary.

The first sealing area 174 has on its inside an inner sealing surface 180 which, for increasing the sealing surface pressure with one or more sealing lips 182 is fitted in the mounted state of the oil functional unit 100 on the outer peripheral surface 166 of the blow-by gas inlet nozzle 162 issue.

At the first sealing area 174 closes down a lower end 184 the radial seal 170 on, which in the assembled state of the oil functional unit 100 the lower end of the blow-by gas inlet nozzle 162 overlaps and from below on a lower end face 186 of the blow-by gas inlet nozzle 162 is applied.

The second sealing area 176 has on its outer side an outer sealing surface 188 which, for increasing the sealing surface pressure with one or more circumferential sealing lips 190 is fitted in the mounted state of the oil functional unit 100 on the boundary wall 168 of the oil room access channel 126 issue.

To the second sealing area 176 the radial seal 170 To impart a higher dimensional stability and to produce the required sealing pressure is the second sealing area 176 by means of a arranged on its inside, substantially hollow cylindrical stiffening element 192 stiffened.

The stiffening element 192 may in particular be formed of a metallic material, for example of a steel material, of aluminum or an aluminum alloy.

To the second sealing area 176 closes up an upper end 194 the radial seal 170 on which a radially outwardly projecting, annular collar 196 includes, with an upper end face 198 in the assembled state of the oil functional unit 100 on the first oil function module 102 and with a lower end surface 200 at the top 116 the Ölraumbegrenzungsbauteils 118 is applied.

The wall 202 the radial seal 170 For example, it can be made as an injection molded part from a suitable elastic material, in particular from an elastomeric plastic material, such as, for example, from an ethylene-acrylate rubber or from a fluororubber.

In this case, the stiffening element 192 be inserted before injection of the elastomeric plastic material in the injection mold, so that the stiffening element 192 positive and cohesive with the wall 202 the radial seal 170 is connected from the elastomeric plastic material.

That the front section 154 opposite rear end of the rear section 156 every cyclone 106a . 106b is up to an oil passage opening 204 locked.

Through this oil passage opening 204 is the interior 206 every cyclone 106a . 106b each with an oil collection room 208 connected, which laterally and upwardly through the upper shell 130 of the first oil function module 102 and down through the carrier plate 136 the lower shell 134 of the first oil function module 102 is limited, wherein the carrier plate 136 at its top 116 each with a respective oil collection room 208 associated oil drain opening 210 is provided, which with an oil drain 212 connected to the bottom 160 the carrier plate 136 is formed.

Each of the oil outlet 212 is how best 27 can be seen, formed substantially hollow cylindrical and on its underside by a bottom plate 214 with an oil outlet 216 locked.

Like, for example 10 to see is, extends each of the oil drain 212 in a respective associated oil chamber access channel 126 of the oil space limiting component 118 into it, the sealing gap 164 between the respective oil outlet pipe 212 and the boundary wall 168 the respectively associated oil space access channel 126 by means of a radial seal 170 is sealed, which in its construction substantially the radial seal described above 170 between the blow-by gas inlet ports 162 and the boundary wall 168 the respectively associated oil space access channel 126 corresponds and only has a smaller diameter, as well as the diameter of the oil outlet pipe 212 and the same associated oil chamber access channels 126 smaller than the diameter of the blow-by gas inlet nozzle 162 and the same associated oil chamber access channels 126 the Ölraumbegrenzungsbauteils 118 ,

At its the rear section 156 opposite front end is the front section 154 every cyclone 106a . 106b by means of a dip tube element 218 locked.

Each dip tube element 218 includes a dip tube 220 with a substantially hollow cylindrical rear section 222 and a substantially hollow cylindrical front portion 224 as well as an annular waistband 226 which is in the area of the transition from the rear section 222 to the front section 224 of the dip tube 220 in the radial direction of the dip tube 220 protrudes outwards.

The ring-shaped collar 226 is at its outer edge along a welding edge with the end face of the front portion 154 of the respectively assigned cyclone 106a . 106b welded.

Each of the dip tube elements 218 is integral and, for example, formed as an injection molded part of a plastic material having the required chemical and thermal resistance.

How best of the 10 and 24 can be seen, is on the support plate 136 the lower shell 134 of the first oil function module 102 in the area between the two cyclones 106a . 106b another oil drain opening 228 arranged, which with one at the bottom 160 the carrier plate 136 molded on further oil outlet 230 connected is.

The oil drain 230 is the same as the oil drainage already described above 212 and extends as well as the oil drain 212 in a the oil drain 230 associated oil chamber access channel 126 the Ölraumbegrenzungsbauteils 118 into it, the sealing gap 164 between the oil outlet 230 and the boundary wall 168 of the oil room access channel 126 through a radial seal 170 is sealed, which is the same structure as the radial seals 170 for sealing the sealing gap 164 between the oil outlet 212 and the boundary walls 168 the same associated oil chamber access channels 126 ,

About the oil drain 230 is the oil chamber of the internal combustion engine with one between the cyclones 106a . 106b arranged clean gas room 232 of the first oil function module 102 connected, in which the dip tubes 220 the cyclones 106a . 106b as well as the inlet 140 of the pressure control valve 108 lead.

The operation of the first oil function module described above 102 the oil functional unit 100 is the following:
During operation of the internal combustion engine occurs between the suction line, via which the outlet 142 of the pressure control valve 108 is connected to the air intake assembly of the internal combustion engine, and the oil chamber of the internal combustion engine, a pressure difference, the gas flow of oil-laden blow-by gas from the oil chamber through the oil space access passages 126 and the blow-by gas inlet ports 162 of the first oil function module 102 into the cyclones 106a . 106b into it, from there through the dip tubes 220 in the clean gas room 232 and from there through the pressure control valve 108 effected in the suction line.

The oil-loaded blow-by gas passes through the cyclone inflow channels 158 essentially tangential to the front sections 154 the cyclones 106a . 106b one.

This will be in the interiors 206 the cyclones 106a . 106b each generates a turbulent flow of the blow-by gas, which has the consequence that the entrained by the blow-by gas oil particles on the inner wall of the respective cyclone 106a . 106b knock down and in the cyclone 106a respectively. 106b back to the oil passage opening 204 and through it into the respective oil collecting space 208 while the liberated from the oil blow-by gas through the dip tubes 220 the cyclones 106a . 106b in the clean gas room 232 and from there through the pressure control valve 108 gets into the suction line.

The cyclones 106a . 106b make it possible to separate even large quantities of oil in the form of very fine oil particles (for example, with a diameter of less than 1 micron) from the blow-by gas.

That in the oil collection rooms 208 of the first Oil function module 102 collected oil passes through the oil outlet 212 in the respective associated oil chamber access channels 126 in the oil space limiting component 118 and from there back into the oil chamber of the internal combustion engine.

That in the 28 to 33 shown in detail second oil function module 110 the oil functional unit 100 includes one in the 29 and 30 illustrated upper shell 234 and one in the 31 to 33 illustrated lower shell 236 ,

The upper shell 234 has the shape of an interior of the upper shell 234 enclosing hood on, with the interior of the upper shell 234 through a partition 238 in an oil filling chamber 240 , which are part of the oil filler neck 112 forms, and the vacuum storage chamber 114 is divided.

The upper shell 234 of the second oil function module 110 is integral and, for example, formed as an injection molded part of a suitable plastic material having the required chemical and thermal resistance.

As material for the upper shell 234 For example, it is possible to use a glass-fiber-reinforced polyamide, for example PA6 or PA6.6.

The wall thickness of the upper shell 234 is preferably from about 2 mm to about 3 mm.

The upper shell 234 of the second oil function module 110 thus has a higher wall thickness than the upper shell 130 of the first oil function module 102 , This ensures the higher mechanical stability, which is the second oil function module 102 due to the fact that in the second oil function module 110 the vacuum storage chamber 114 is housed.

The vacuum storage chamber 114 is connected via (not shown) access openings with one or more vacuum lines, which from the vacuum storage chamber 114 lead to a device to be supplied with negative pressure of the internal combustion engine or a vehicle in which the internal combustion engine is installed, for example to a brake booster or to a pneumatic camshaft adjusting.

At its lower edge is the upper shell 234 of the second oil function module 110 with a circumferential mounting flange 242 provided, the plurality of fastener passage openings 244 having.

The oil filling chamber 240 is at its top with an oil filler opening 246 provided, which is provided with an internal thread into which a separately from the upper shell 234 manufactured oil filler cap 248 can be screwed.

Furthermore, the upper shell has 234 of the second oil function module 110 laterally arranged recesses 250 for receiving the injectors 122 or from their supply lines and laterally arranged recesses 252 for access to the fastener passage openings 244 on.

The in the 31 to 33 illustrated lower shell 236 of the second oil function module 110 includes a substantially rectangular support plate 254 with widened end areas 256 and 258 ,

The carrier plate 254 indicates at its top 260 one in the end area 258 arranged oil drain opening 262 and several, along the edge of the carrier plate 254 arranged fastener passage openings 264 on.

The lower shell 236 of the second oil function module 110 is integral and, for example, formed as an injection molded part of a plastic material having the required chemical and thermal resistance.

As plastic material for the lower shell 236 For example, a glass fiber reinforced polyamide, in particular PA6 or PA6.6, can be used.

The lower shell 236 is at the bottom of the top shell 234 of the second oil function module 110 set so that the fastener passage openings 264 in the lower shell 236 with the fastener passage openings 244 in the upper shell 234 aligned, so that suitable fastening means, in particular fastening screws, from above through the fastener passage openings 244 . 264 through in the same aligned threaded blind holes on the top 116 the Ölraumbegrenzungsbauteils 118 can be screwed to the second oil function module 110 detachable on the oil space limiting component 118 set.

The determination of the lower shell 236 on the upper shell 234 of the second oil function module 110 can be done in particular by welding.

These welding can be performed for example by ultrasonic welding or by friction welding.

The oil drain opening 262 at the top 260 the carrier plate 254 is with one at the bottom 266 the lower shell 236 molded oil drain support 268 connected.

The essentially hollow cylindrical oil drain port 268 extends into a same associated oil space access channel 126 the Ölraumbegrenzungsbauteils 118 into it, the sealing gap 164 between the outer peripheral surface 270 of the oil outlet 268 on the one hand and the boundary wall 168 the associated oil space access channel 126 by means of a radial seal 170 is sealed.

This radial seal 170 corresponds in structure to the structure of the radial seals described above 170 for sealing between the blow-by gas inlet ports 162 of the first oil function module 102 and the boundary walls 168 the same associated oil chamber access channels 126 , is in terms of their diameter, however, to the diameter of the oil outlet 268 of the second oil function module 110 associated oil chamber access channel 126 customized.

Further, the lower shell 236 of the second oil function module 110 on its underside with several, for example four, blind plugs 272 provided, which to the bottom 266 the carrier plate 254 are formed.

These substantially cylindrical blind plug 272 each extend into an associated oil space access channel 126 the Ölraumbegrenzungsbauteils 118 into it, whereby in each case the sealing gap 164 between the outer peripheral surface 274 of the relevant blanking plug 272 on the one hand and the boundary wall 168 the respectively associated oil space access channel 126 on the other hand by means of a radial seal 170 is sealed, which in its construction already described above radial seals 170 corresponds and in terms of their diameter to the diameter of the respective associated oil space access channel 126 is tuned.

The blind plugs 272 only serve for the correct positioning of the second oil function module 110 on the oil space limiting component 118 and for sealing the respective associated oil space access channels 126 but do not connect between the oil room access channels 126 and the interior of the second oil function module 110 ago.

The blind plugs 272 can either be solid or contain a cavity at the bottom 266 the carrier plate 254 the lower shell 236 of the second oil function module 110 ends.

The oil filling chamber 240 forms together with the oil filler opening 246 and the oil drain 268 an oil filler neck 112 the oil functional unit 100 , which serves to supply fresh oil to the oil chamber of the internal combustion engine.

To supply fresh oil to the oil room, the oil filler cap 248 unscrewed, oil through the oil filler opening 246 into the oil filling chamber 240 filled, from which the oil through the oil drain 268 and the associated oil chamber access channel 126 runs into the oil chamber of the internal combustion engine, and then the oil filling chamber 240 by unscrewing the oil filler cap 248 closed again.

The vacuum storage chamber 114 of the second oil function module 102 is opened as required by opening or closing valves (not shown) in the above-mentioned vacuum lines containing the vacuum storage chamber 114 connect to the devices to be supplied with negative pressure, used.

The second oil function module 110 can be independent of the first oil function module 102 from the oil space limiting member 118 solved and against a differently designed second oil function module 110 be replaced.

This differently designed second oil function module 110 in particular, another position of the oil filler neck 112 relative to the oil space limiting component 118 exhibit.

In this way it is possible, for example, a longitudinal installation of the internal combustion engine adapted oil functional unit 100 by replacing only the second oil function module 110 in an adapted to a transverse installation of the internal combustion engine oil unit 100 without the replacement of the first oil function module 102 would be required.

In the embodiment of an oil functional unit described above 100 Form the blow-by gas inlet ports 162 and the oil drain 212 and 230 of the first oil function module 102 as well as the oil drain 268 and the blind plugs 272 of the second oil function module 110 each connection elements 276 , in particular connecting piece 278 , the oil functional unit 100 , each with one of the oil room access channels 126 in the oil space limiting component 118 cooperate to connect between the oil space of the internal combustion engine and at least a part of an interior of the first oil function module 102 or the second oil function module 110 the oil functional unit 100 or the relevant oil room access channel 126 to close and seal against the exterior of the engine.

Claims (27)

Oil operating unit for arranging on an internal combustion engine having an oil chamber and an oil space limiting component adjoining the oil chamber ( 118 ), which has multiple oil space access channels ( 126 ) to the oil space, wherein the oil functional unit ( 100 ) several connection elements ( 276 ), each connecting element ( 276 ) each with one of the oil space access channels ( 126 ) cooperates to establish a connection between the oil space and at least part of an interior space ( 132 . 240 ) of the oil functional unit ( 100 ) or the relevant oil room access channel ( 126 ), and wherein each connecting element ( 276 ) with a respective connection element ( 276 ) is provided sealing gasket. Oil functional unit according to claim 1, characterized in that at least one of the connecting elements ( 276 ) as a connecting piece ( 278 ) is formed, which in the assembled state of the oil functional unit ( 100 ) into an oil space access channel ( 126 ) of the oil space limiting component ( 118 ) intervenes. Oil functional unit according to one of claims 1 or 2, characterized in that at least one of the connecting elements ( 276 ) with a radial seal ( 170 ) is provided. Oil functional unit according to claim 3, characterized in that the radial seal ( 170 ) on its radially outer side with at least one sealing lip ( 190 ) is provided. Oil functional unit according to one of claims 3 or 4, characterized in that the radial seal ( 170 ) at its radially inner side with at least one sealing lip ( 182 ) is provided. Oil functional unit according to one of claims 3 to 5, characterized in that the radial seal ( 170 ) one in the assembled state of the oil functional unit ( 100 ) on a connecting element ( 276 ) adjacent first sealing area ( 174 ) and one on the oil space limiting component ( 118 ) adjacent second sealing area ( 176 ) and one between the first sealing area ( 174 ) and the second sealing area ( 176 ), for tolerance compensation deformable compensation area ( 178 ). Oil functional unit according to one of claims 1 to 6, characterized in that the seal at least one sealing element ( 202 ) comprises an elastomeric material. Oil functional unit according to one of claims 1 to 7, characterized in that the seal at least one stiffening element ( 192 ). Oil functional unit according to claim 8, characterized in that the at least one stiffening element ( 192 ) is formed of a metallic material. Oil functional unit according to one of claims 1 to 9, characterized in that at least one of the connecting elements ( 276 ) as a blind plug ( 272 ) is formed, which in the assembled state of the oil functional unit ( 100 ) one of the oil room access channels ( 126 ) of the oil space limiting component ( 118 ) closes. Oil functional unit according to one of claims 1 to 10, characterized in that the oil functional unit ( 100 ) comprises a coherent oil function module, which covers all functions of the oil functional unit ( 100 ) includes. Oil operating unit according to one of claims 1 to 11, characterized in that the oil functional unit ( 100 ) at least two separately on the oil space limiting component ( 118 ) mountable oil function modules ( 102 . 110 ). Oil operating unit according to claim 12, characterized in that at least two of the oil function modules ( 102 . 110 ) have different wall thicknesses. Oil operating unit according to claim 13, characterized in that that of the oil function modules ( 110 ), which has a higher wall thickness, a vacuum accumulator chamber ( 114 ) includes. Oil functional unit according to one of claims 12 to 14, characterized in that one of the oil function modules ( 110 ) an oil filler neck ( 112 ) and is interchangeable with another oil functional module, wherein in the mounted state of the oil functional unit ( 100 ) the oil filler neck ( 112 ) at a different position relative to the oil space limiting component ( 118 ) is arranged. Oil functional unit according to one of claims 1 to 15, characterized in that the oil functional unit ( 100 ) at least one oil separator ( 104 ). Oil functional unit according to claim 16, characterized in that at least one of the oil separators ( 104 ) at least one cyclone ( 106 ). Oil functional unit according to one of claims 1 to 17, characterized in that the oil functional unit ( 100 ) at least one pressure regulating valve ( 108 ). Oil functional unit according to one of claims 1 to 18, characterized in that the oil functional unit ( 100 ) at least one oil filler neck ( 112 ). Oil functional unit according to one of claims 1 to 19, characterized in that the oil functional unit ( 100 ) at least one vacuum accumulator chamber ( 114 ). Oil functional unit according to one of claims 1 to 20, characterized in that the oil functional unit ( 100 ) at least one oil function module ( 102 . 110 ), which at least one upper shell ( 130 . 234 ) and a lower shell ( 134 . 236 ). Oil functional unit according to claim 21, characterized in that to the lower shell ( 134 . 236 ) at least one of the connecting elements ( 276 ) is formed. Oil functional unit according to one of claims 21 or 22, characterized in that to the lower shell ( 134 ) at least one cyclone ( 106 ) is formed. Oil functional unit according to one of claims 21 to 23, characterized in that on the upper shell ( 130 ) At least one pressure control valve housing is formed. Oil functional unit according to one of claims 1 to 24, characterized in that the oil functional unit ( 100 ) at least one oil function module ( 110 ), which with at least one recess ( 250 ) for receiving an injector ( 122 ) and / or a supply line to an injector ( 122 ) is provided. Oil functional unit according to one of claims 1 to 25, characterized in that the oil functional unit ( 100 ) at least one oil function module ( 102 . 110 ), which with a mounting flange ( 146 . 242 ) for fastening to the oil space limiting component ( 118 ) is provided. Oil operating unit according to claim 26, characterized in that the mounting flange ( 146 . 242 ) with fastener passage openings ( 146 . 244 ) for the passage of fasteners through the mounting flange ( 146 . 242 ) is provided.